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Significant and High Impact Severe Weather Event is Underway

A powerful spring storm continues across the country with multiple high impacts in the forecast. Life-threatening, catastrophic, and potentially historic flash flood event continues across the Lower Ohio Valley and Mid-South. A couple rounds of significant severe weather expected from the Mid-South through the Ozarks and ArkLaTex with very large hail and strong tornadoes possible. Read More >

Overview

Late in the evening on Wednesday, May 11, thunderstorms moved across south central South Dakota, while others developed over the Black Hills and moved northeast overnight. Portions of the western South Dakota plains were hit by multiple thunderstorms overnight, which brought damaging winds and large hail. The most severe wind damage occurred in the Red Owl area, where several outbuildings were substantially damaged or completely destroyed. A damage survey determined the damage was caused by very strong straight-line winds, not a tornado. While the highest measured wind gust was 76 mph, the structure damage indicated wind gusts were higher than 80 mph. 

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